Finding the Fourth Proportional to 11,292.16, 15,567.78 and 7,515.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,292.16 : 15,567.78 = 7,515.50 : x
2. Step 2: Convert to fraction form
   11,292.16/15,567.78 = 7,515.50/x
3. Step 3: Cross multiply
   11,292.16x = 15,567.78 × 7,515.50
4. Step 4: Simplify right side
   11,292.16x = 116,999,650.59
5. Step 5: Solve for x
   x = 116,999,650.59/11,292.16
6. Step 6: Final answer
   x = 10,361.14